What's the best way to share videos on lemmy?

I've tried posting an h264 mp4 file from a webserver i own, and I noticed that most clients fail to load or outright crash when trying to open the post. Some give an "invalid MIME type" error even though "video/mp4" is a valid one. Posting the link as a hyperlink works, but then you don't get a preview. So what's the best way to share video on lemmy? Is it youtube/imgur or am I doing something wrong?